Method of making cellular elements for radiators or the like



D McR. LIVINGSTON.

METHOD OF MAK|NG CELLULAR ELEMENTS FOR RADIATORS OR THE HK'E.APPLICATION FILED MAYH), 1917. RENEWED JULY 23, 1920.

1,377,494. v Patented May10,1921

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/ 'IIVI/EIVTOR D Ma Ra La azr z sdorz A m) H/VE rs UNITED STATES rarestcaries.

D MGRA LIVINGSTON, OF NEW YQRK, N. Y.

. METHOD OF MAKING CELLULAR ELEMENTS FOR RADIATORS OR THE LIKE.

Specification of Letters Patent.

Patented May 10, 1921.

Application filed May 19, 1917, Serial No. 169,683. Renewed July 23,1920. Serial No. seems.

T 0 all, whom it may concern:

Be it known that I, D MCRA LIVINGSTON, a citizen of the United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and Improved Method ofMaking Cellular Elements for Radiators or the like, of which thefollowing is a full, clear, and exact description. 7

Theinvention in this application relates to the method of makingcellular elements for radiators or the like.

My earlier filed 'co'pending application, Serial No. 61995, filedNovember 17, 1915, patented September 11, 1917, No, 1,239,485,

' I reissued June 26, 1919, No. 1 1826 illustrates bers for spacing thecells when assembled cellular elements made according to my method, thecellular element being used in a radiator.

In the present application I will describe the same method of makingcellular elements with respect to an element particularly designed foruse in false fronts for radiators and a false front constructed of suchelements. r

The object of the present invention is to provide a method of makingcellular elements for the purposes referred to wherein a sheet of singlethickness is deformed by expanding portions thereof to presentmemandmore specifically includes the making of such an element in afashion so that the front edge of the same, when completed, has apresentable appearance and so that when assembled with other similarelements a smooth regular front will be presented.

Reference is to be had to the accompanying drawingforming apart of thisspecification in which similar reference characters 1nd1- catecorresponding parts in all the views, it

being understood that the drawing is merely illustrative of examples ofthe invention.

Figure 1 is'a front elevation of a frame of a radiator front and aportion of a cellular structure therein embodying my invention;

F ig. 5 is a fragmentary face View showing a portion of one of theexpanded elements; Fig. 6 is a fragmentary perspective view of theexpanded element prior to turning back the front edge thereof as in Fig.4; v Fig. 7 is a section corresponding with Fig.

3 but showing the arrangement of the expanded elements for producing apointed front. s i a i In Fig. 1 the numeral 10 indicates a suitableframe having the general appearance of a radiator frame or casing andprovided with suitable means to secure the same over a radiator, therebeing shown side brackets 11 adapted to be secured by the bolts employedfor fastening the radiator to the frame of an automobile. In the top ofthe frame 10, a hole is produced to accommodate the usual neck A of aradiator. Within the frame 10 a hexagonal cellular structure 12 issecured The cellular structure 12above referred to is, in the case of afalse front, entirely made up of similar cellular elements produced bysuitably expanding a sheet of metal of single thickness. The sheet isbrought to the form 2 shown in Figs. 5 and 6 by suitable dies which cutequally spaced slits in the same and which deform the material betweenthe slits in the manner shown. The deformed sheet comprises similarlyshaped deformations 13 and 14. alternately located on opposite sides ofthe plane of the sheet in laterally extended relation. At the frontmargin of the sheet the deformation 13 is placed on the same side of theplane of the sheet as the adjacent deformation 14:. The slit 13* betweenthe dc formations 13 and 14 may be made before or after the deformingstep. The deformations in the form shown are in outline the connectedsides of one-half of a polygon which,

as here shown, is a regular hexagon, although any other form of apolygon which will properly nest may be obtained with different shapeddies.

. After the sheet has been brought to the form shown in Figs. 5 and 6the front de-' formation 13 is brought to the other side of the plane ofthe sheet in order that the edge view of the sheet may simulate a seriesof polygons. One way of doing this is shown in Fig. 4 wherein thespacing portions or unexpanded zones 15 of the sheet, 2'. 6., theportions between the rows of deformations, are folded or bent flat uponthemselves. This brings the deformation 13 alongside the deformation 13and directly opposite the deformation 14. An end view of the sheet thenrepresents a series of hexagons spaced a distance equal to one side ofthe hexagon and whose transverse edges are in the same plane. A sin lehexagon so made is shown in Fig. 4:, whi e in Fig. 3 a plurality ofcellular elements shown as assembled provide a smooth front. Thedeformations 14:-14 of each element are back to back with thecorresponding deformations ofthe other element, the deformations 13being brought similarly against the deformations 13 of the other elementand the folded over deformations 13 being similarly arranged. Theassembling of such a false front is accomplished by taking a suitablenumber of cellular elements made up as above described and of the properlengths and reversing the alternate elements so that they properly nestas indicated in Fig. 2 with the corresponding deformations of adjacentplates back to back. The turning back of the front edge of the plate asin Fig. 4 is highlydesirable for a fiat front but where a pointed frontis to be produced, a section of one-half of which is indicated in Fig. 7and designated 12, the turning back of the front edge is not absolutelynecessary because each succeeding plate from the center toward each sideis stepped back a distance equal to the width of an expanded element 13or 14 and the absence of complete hexagonal front edges on therespective plates is not noticeable.

The cellular structure described, it will be seen, possesses substantialstrength owing to the broad direct contact surfaces between the variousmembers 13, 1d of the respective plates. Since there is no question ofradi ating efliciency to be considered, the contacting of the expandedmembers possesses no disadvantages. When a cellular element madeaccording to the process before described is to be used in a radiator,it takes the form shown in my above described patent.

I wish to State in conclusion that although the illustrated examplesconstitute practical embodiments of my invention, I do not limit myselfstrictly to the mechanical details herein illustrated, since manifestlythe same can be considerably varied without departure from the spirit ofthe invention as defined in the appended claims.

Having thus described my invention I claim as new, and desire to secureby Letters Patent:

1. The method of forming cellular elements from a fiat sheet of singlethickness for a purpose specified; which comprises providing alongitudinal margin of the plate with equally spaced deformations whichdefine the connected sides of one-half a polygon, one of these sidesbeing in a plane parallel with the plane of the sheet, the deformationsbeing spaced by portions of the sheet whose lengths are substantiallyequal to the length of the parallel side aforesaid; longitudinallyslitting the deformations; and thereafter positioning one-half themarginal deformations relative to the other half thereof so that theedge view of the sheet simulates a series of polygons.

2. The method of forming cellular elements from a flat sheet of singlethickness for a purpose specified; which comprises providing alongitudinal margin of the plate with equally spaced deformations whichdefine the connected sides of one-half a polygon, one of these sidesbeing in a plane parallel with the plane of the sheet.

the deformations being spaced by portions of the sheet whose lengths aresubstantially equal to the length of the parallel side aforesaid;longitudinallyslitting the deformations; and thereafter bringingone-half of the marginal deformations to the other side of the plane ofthe sheet.

3. The method of forming cellular elements from a flat sheet of singlethickness for a purpose specified; which comprises providing alongitudinal margin of the plate with equally spaced deformations whichdefine the connected sides of one-half a polygon, one of these sidesbeing in a plane parallel with the plane of the sheet, the deformationsbeing spaced by portions of the sheet whose lengths are substantiallyequal. to the length of the parallel side aforesaid; longitudinallyslitting the deformations; and thereafter bring the outer half of themarginal deformations to the other side of the plane of the sheet.

4. The method of forming cellular elements from a fiat sheet of singlethickness for a purpose specified; which comprises providing alongitudinal -margin of the plate with equally spaced deformationsextending to one side of the plane of the sheet each of which definesthe three connected sides of one-half a hexagon, the deformations beingspaced by portions of the plate whose lengths are equal to the centralside of said half hexagon and which are disposed at an angle of to theconnected sides of the adjacent half-hexagon's; slit- 120 ting thedeformations; and thereafterbending the spacing portions fiat uponthemselves on a line connecting the slits in the deformations.

5. The method of forming cellular elements from a flat sheet of singlethickness for a purpose specified; which comprises providing alongitudinal margin of the plate with equally spaced deformationsextending to one side of the plane of the sheet each of which definesthe three connected sides of one-half a regular hexagon, thedeformations being spaced by portions of the plate whose lengths areequal to one side of said hexagon and which are disposed at an angle of120 to the connected sides of the adjacent half-hexagon; slitting thedeformations; and thereafter bending the spacing portions flat uponthemselves on a line connecting the slits in the deformations.

6. In the manufacture of polygonal cells,

for a purpose specified, from a sheet of single thickness the margin ofwhich has a longitudinal series of half-polygons extending to one sideof the sheet, said halfpolygons being separated by spacing portions andfurther being longitudinally slitted, the step which consists in foldinga longitudinal portion of the margin along a line connecting said slitstoward the other side ofthe sheet so that the spacing portionsseparating the half-polygons are brought into close contact.

D MoRA LIVINSTON.

